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(No Model.) 2 Sheets-Sheet 1.

J. H. BROWN. BRBAKDOWN FIREARM. No. 585,860. Patented July 6, 1897.

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2 Sheets-Sheet 2.

(No Model.)

J H BROWN BREAKDOWNHRBARM.

No. 585,860. Patented July 6, 1897.

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PATENT JOHN H. BROW'N, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO ROBERT M. BROWN, OF SAME PLACE.

BREAKDOWN FIREARIVI.

SPECIFICATION forming part of Letters Patent No. 585,860, dated July e, 1897.

Application tiled April 6, 1896. Serial No. 586,315. (No model.)

To all whom, it may concern:

Be it known that I, JOHN H. BROWN, of the city and county of New York, in the State of New York, have invented a new and useful Improvement in Firearms, of which the following is a specification.

My invention relates to an improvement in iirearms with the object in View of simplifying the lock and providing for its ready removal, together with the triggers and triggerguard, from the stock at pleasure without disturbing the connection between the barrel or barrels and stock, for taking apart the parts of the lock at pleasure for renewal or cleaning, and for holding the barrel or barrels to the stock.

I have chosen to illustrate my invention in the form of a look adapted for a double-barrel gun-such, for example, as the double-barreled shotgun; but its features may be applied to a rie or single-barrel shotgun.

In the accompanying drawings, Figure 1 is a longitudinal .section from the upper to the under side, taken centrally through the lock and the portion of the barrels and stock adjacent thereto, the section passing through the division-plate between the barrels. Fig. 2 is a top plan View of the lock in detail. Fig. 3 is a vertical section through line 3 3 of Fig. 2, showing the hammer cocked and Fig. 4. is a similar view showing the hammer down or forward.

The stock is denoted by A. The divisionplate, to which the barrels are secured and which carries the side groove along its upper edge, is denoted by B and the breech-block for connecting the barrels to the stock by C. The breech-block C is secured to the stock by means of a screw-bolt D, which extends from the front of the breech-block, in which the head of the screw-bolt is countersunk, rearwardly through the breech-block and int-o the front portion of the stock, where it engages a nut d, located in a slot ce, which opens to the top of the stock, but which is covered by a tailpiece or tang c of the breech-block, which extends along down the top of the stock a considerable distance and is secured by a screw c. W'henever the joint between the breech-block and stock becomes loosened, either by the shrinking of the wood or by jarring due to the iiring of the piece, such joint may be tightly closed by turning the bolt D.

The barrels are hinged to the breech-block C by means of a pintle b, as is common, to permit them to be tilted downwardly for pur* poses of loading and removing the shells. They are locked in their normal position by means of an inwardly and backwardly springactuated bar e, operated by a vertical rocking post E, which has connected therewith a thumb-lever e' for operating it, as is common. rllhe post E is connected with the bare by means of a pin e2, located eccentrically to the axis of the post, and the said post is provided with a laterally-elongated opening e3, through which the bolt D extends.

The usual ejector is omit-ted in the drawings, as it forms no part of my present invention, and it is to be assumed that it may be of any well-known or approved form, such as is in common use with breech-loading irearms.

The under side of the stock and the under side of the breech-block are cut away to receive the lock, the several parts of which are mounted upon the guard-plate F, to the under side of which the trigger-guard Gis secured, or the trigger-guard G might be formed integral with the guard-plate F. Vhen the guard-plate F is in position, it iits the mouth of the recess in the under part of the stock and breech-block and is conveniently secured in position by means of a projecting lip f at its front end,which catches over the rear edge of the plate H, iixed to the under side of the breech-block, and at its rear end the said guard-plate F is provided with a spring-actuated catch f', provided with an operating pin or shoulder f2, adapted to spring into a` notch a', formed in the front of a inishing or end plate CL2, permanently fixed to the under side of the stock. The under edge of the plate a2 in proximity to the notch ct is rounded, as shown at a3, so that the `catch f will be forced back against the tension of its actuating-spring]L13 as the guard-plate F is pressed into position and will seat in its notch as soon as the plate reaches its position from under the pressure of the extension of the spring f3. The guard-plate F, with the parts attached thereto, may be removed at any time in a mo- IOO ment by simply springing the catch f forwardly to release its end from the notch a" and removed by the en dwise pressure of any pointed instrument to remove the hammers and again adjust them, and it is held in its position by the engagement of its ends with the opposite interior walls of the recess in the breech-block when the lock is in position for USG.

The sears for holding the 'hammers cocked are denoted by K K' and are pivoted to the guard-plate F by means of a pintle 7c, extending through ears f5, projecting upwardly from the plate F. The pintle 7c may be removed at any time by endwise pressure, and it, like the pintle t', is held in position by the interior opposite walls of the recess when the lock is in use.

The'ordinary springs for operating the sears are omitted and the main springs for operating the hammer are made to perform the do uble functionof operating the sears 'and also throwing the hammers. The said springs are denoted by L L, the spring L being arranged to operate the hammer I and sear K and the spring L/ to operate the hammer I and sear K. The springs L L are removably supported by their engagement at their rear ends with notches 7c' at the rear ends of the sears and at their front ends with depressions t at the rear of the hammers a short distance above the shoulder t2, where the sear engages the hammer and holds it cocked. The springs L L are normally slightly curved, as represented in Fig. 4, and when the hammer is forward or down, as represented in Fig. 4c, the spring L or L may be inserted in position or removed from its position bya lateral pressure with the fin gers. The structure and arrangement are such that when the hammers are thrown back they will compress the springs L L', as shown in Figs. l and 3, and the 'spring-pressure will at the same time exert itself to push the rear end of the sears downwardly to throw their forward ends into engagement with the shoulder on the hammer to hold it cocked. The amount of downward pressure which shall be exerted upon the sears by the springs is determined to a nicety 'to afford the desired amount of pressure upon the trigger in firing by so locating the spring with respect to the sear that more or less of its force shall be expended in pressing the sear rearwardly instead of downwardly.

The sears K K are rocked in a direction to release the hammers by the lifting pressure under their rear ends when the triggers M M are pulled. The triggers are pivoted to the guard-plate F by a pintle m, which extends through uprising ears f6 on the plate vand through corresponding perforations in the triggers.

The triggers are normally lockedagainst rearward movement,and hence the gun locked at safety by the action of a longitudinallysliding bar N, the forward end of which rests normally in notches m in the rear ends of the operating-arms of the triggers and which is slid rearwardly out of engagement with the triggers when the gun is grasped for ring by the upward pressure upon the spring-actuated lever O, pivoted in a slot f7 in the guard-plate to the 'rear of the trigger-guard.-

The lever 'O is provided with an upwardly and forwardly inclined arm o, which works Within a slot n in the bar Nas the lever O is raised. The effect of the inclined armo upon the bar N is to force it rearwardly out of engagement with the triggers, and when the -lever O is returned to its depressed position under the tension of the spring o the arm o will force the bar N forwardly into locking engagement with the triggers.

The hammers I l are cocked as the barrels are swung downwardly and upon their pivotal connection b by the rearwardly-sliding movement of a cooking-plate P, seated within the breech-block and held in position by the plate H, fastened to the under side of the IOO breech-block, the cooking-plate P being so out of the way of the hammers by means of a spring p.

In practice the hammers are held, cocked against unintentional operation by the bar N, which prevents the triggers from bein g rocked in a direction Vto lift the rear ends of the sears and disengage the hammers. When, however, the gun is grasped around the small part of the stock to be brought to the shoulder for firing, the fingers other than the fo-reinger or fingers which are used for the operation of the triggers will without any u-n- 'usual exertion naturally lift the lever() and free the triggers, so that they may be operated to throw the hammers.

The lock, together with the guard-plate and 'trigger-guard, may be removed in a moment by simply springing the catch f', and when so removed the several parts of the lock--vi-z., springs, and the triggersmay be removed by the hammers, the sears, the' IIO simply sliding the pintles t', lo, and m laterally changing it for another taken from a supply which may be kept at hand. The parts may be assembled without difficulty and Without requiring the use of either a screw-driver or hammer.

What I claim isl. The combination with the stock and the breech-block, of a screw bolt extending through the breech-block into the stoel; for fastening the breech-block into the stock and a nut seated Within a slot in the stock for engaging the screw-bolt to hold the parts in removable adjustment, substantially as set forth.

2. The combination With the hammer, the

sear, the actuating-spring, the trigger and their support, of a longitudinally-sliding bar having a looking engagement With the trigger and a spring-actuated lever pivoted to the said support and having an engagement with the sliding bar to positively throw it out of and into engagement With the trigger as the lever is raised and lowered, substantially as set forth. j

JOHN H. BROWN. lVitnesses:

FREDK. HAYNEs, IRENE B. DECKER. 

